Trace the output of the following program and explain how the program executes. 1 import java.util.*; 2 public class intStack{ 30 public static void main(String[] args) { 4 StackstackOne = new Stack(); System.out.println(stackOne.empty()); for (int i = 0; i < 5; i++) stackOne.push(new Integer (i*10)); System.out.println(stackOne.peek()); Stack stackTwo = new Stack(); while (!stackOne.empty()) stackTwo.push(stackOne.pop()); System.out.println(stackTwo.peek()); 45 5 6 7 8 9 he 11 12 13 14 15} }

Trace the output of the following program and explain how the program executes. 1 import java.util.; 2 public class intStack{ 30 public static void main(String[] args) { 4 StackstackOne = new Stack(); System.out.println(stackOne.empty()); for (int i = 0; i < 5; i++) stackOne.push(new Integer (i10)); System.out.println(stackOne.peek()); Stack stackTwo = new Stack(); while (!stackOne.empty()) stackTwo.push(stackOne.pop()); System.out.println(stackTwo.peek()); 45 5 6 7 8 9 he 11 12 13 14 15} }

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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b. import java.util.ArrayList; public class Main { public static void main (String[]args) { ArrayList snacks = new ArrayList 0; snacks.add ("Grapes"); snacks.add ("Apples"); snacks.add ("Orange"); snacks.add (2, "Carrots"); snacks.remove (0); System.out.println (snacks.get(1)); System.out.println (snacks.get(2)); } }
JAVA The following code for InsertionSort is given to us by the textbook. Trace the code stepby step using the array[55, 22, 77, 99, 66, 33, 11]on a piece of paper or using a Word document. If the code has errors, correct it and make itwork.public static void insertionSort(double[] list) {for (int i = 1; i < list.length; i++) {/** insert list[i] into a sorted sublist list[0..i-1] so thatlist[0..i] is sorted. */double currentElement = list[i];int k;for (k = i - 1; k >= 0 && list[k] > currentElement; k--) {list[k + 1] = list[k];}// Insert the current element into list[k+1]list[k + 1] = currentElement;}}
2. Complete the following program, trace and give the output. 1 import java.util.*; 2 public class stackProgram{ 30 public static void main(String[] args) { Stack stack1 = ; //insert "A", "B", "C", "D", in the stack 2 3 4 9 5 10 11 6 __); 13 // Prints the top of the stack ("D") System.out.println("Top element is: " // search from the top of the stack System.out.println("C is present at " + stack1.search("C")+"positions from top"); stack1.pop(); // removing the top ("D") 15 7 // removing the next top ("C") 17 18 // Returns the number of elements present in the stack System.out.println("Stack size is " + stack1.size()); // check if stack is empty 19 20 if ( 8 System.out.println("Stack is Empty"); else System.out.println("Stack } ن is not Empty");
ALL ABOUT ARRAYLISTMachine Problem #1. Write a method-oriented Java program to create a new array list of size 10, add somecountries (string) and print out the collection. Class Name: ArrayListMethodCountriesSample Input/OutputList of CountriesJapanUSPhilippinesKuwaitOmanSingaporeHong KongMalaysiaGreat Britain Machine Problem #2. Write a method-oriented Java program that asks the user to input two numbers and getthe sum, difference, product, and average of the numbers inputted. Class Name: MethodFourOperationsSample Input/OutputEnter num1 :90Enter num 2:88The sum is: 178The difference is: 2The product is: 7920The quotient is: 89USE JAVA LANGUAGE
java /* Practice Stacks and ourVector Write a java program that creates a stack of integers. Fill the stack with 30 random numbers between -300 and +300. A)- With the help of one ourVector Object and an additional stack, reorganize the numbers in the stack so that numbers smaller than -100 go to the bottom of the stack, numbers between -100 and +100 in the middle and numbers larger than +100 in the top (order does not matter) B)- (a little harder) Solve the same problem using only one ourVector object for help C)- (harder) Solve the same problem using only one additional stack as a helper */ public class HWStacks { public static void main(String[] args) { // TODO Auto-generated method stub } }
PROBLEM STATEMENT: Return a sublist of a given list from the range of the two integerinputs from, to. public class FindSublistFromRange{public static ArrayList<Integer> solution(ArrayList<Integer> elms, int from, int to){// ↓↓↓↓ your code goes here ↓↓↓↓return new ArrayList<>();} Can you help me with this question The language is Java Please use the code i provided above to answer this question
OCaml Code: The goal of this project is to understand and build an interpreter for a small, OCaml-like, stackbased bytecode language. Make sure that the code compiles correctly and provide the code with the screenshot of the output. Make sure to have the following methods below: -Push integers, strings, and names on the stack -Push booleans -Pushing an error literal or unit literal will push :error: or :unit:onto the stack, respectively -Command pop removes the top value from the stack -The command add refers to integer addition. Since this is a binary operator, it consumes the toptwo values in the stack, calculates the sum and pushes the result back to the stack - Command sub refers to integer subtraction -Command mul refers to integer multiplication -Command div refers to integer division -Command rem refers to the remainder of integer division -Command neg is to calculate the negation of an integer -Command swap interchanges the top two elements in the stack, meaning that the…
Question#3.Write a Python program to reverse a stack using recursion. Problem Solution Hints: 1. Create a class Stack with instance variable items initialized to an empty list. 2. Define methods push, pop, is_empty and display inside the class Stack. 3. The method push appends data to items. 4. The method pop pops the first element in items. 5. The method is_empty returns True only if items is empty. 6. The method display prints the elements of the stack from top to bottom. 7. Define function insert_at_bottom which takes a stack and a data item as arguments. 8. The function insert_at_bottom adds the data item to the bottom of the stack using recursion. 9. Define function reverse_stack which takes a stack as argument. 10. The function reverse_stack reverses the stack using recursion. 11. Create an instance of Stack, push data to it and reverse the stack.
JAVA: Write a recursive method named threeSum that accepts a list of integers and prints all combinations of three integers in the list that sum to 0. For example, if given the list [-1, 0, 1, 2, -1, -4], print the following lines of output: [-1, 0, 1] [-1, 2, -1] [0, 1, -1] You may print the lines of output in any order. The elements in each three-element sublist should appear in the same relative order that they appeared in the original list. Do not print duplicate lists; if the same exact sublist can be made in multiple ways, print it only once. If there are no combinations of three elements that sum to 0, print no output. The list passed to your method must be back to its original state at the end of the call. Either do not modify it, or if you modify it, fully undo your modifications before the method returns. Constraints: Do not declare any global variables. You can use any data structures you like, and your code can contain loops, but the overall algorithm must be recursive and…
JavaTimer.java: import java.util.Arrays;import java.util.Random; public class JavaTimer { // Please expand method main() to meet the requirements.// You have the following sorting methods available:// insertionSort(int[] a);// selectionSort(int[] a);// mergeSort(int[] a);// quickSort(int[] a);// The array will be in sorted order after the routines are called!// Be sure to re-randomize the array after each sort.public static void main(String[] args) {// Create and initialize arraysint[] a = {1, 3, 5}, b, c, d;// Check the time to sort array along startTime = System.nanoTime();quickSort(a);long endTime = System.nanoTime();long duration = (endTime - startTime) / 1000l;// Output resultsSystem.out.println("Working on an array of length " + a.length + ".");System.out.println("Quick sort: " + duration + "us.");}// Thanks to https://www.javatpoint.com/insertion-sort-in-javapublic static void insertionSort(int array[]) {int n = array.length;for (int j = 1; j < n; j++) {int key = array[j];int…
import java.util.Scanner; public class LabProgram { // Recursive method to draw the triangle public static void drawTriangle(int baseLength, int currentLength) { if (currentLength <= 0) { return; // Base case: stop when currentLength is 0 or negative } // Calculate the number of spaces needed for formatting int spaces = (baseLength - currentLength) / 2; if (currentLength == baseLength) { // If it's the first line, don't output spaces before the first '*' System.out.println(" ".repeat(spaces) + "*".repeat(currentLength)); } else { // Output spaces and asterisks System.out.println(" ".repeat(spaces) + "*".repeat(currentLength)); } // Recursively call drawTriangle with the reduced currentLength drawTriangle(baseLength, currentLength - 2); } public static void drawTriangle(int baseLength) { drawTriangle(baseLength, baseLength); } public…
import java.util.* ; public class Averager { public static void main(String[] args) { //a two dimensional array int[][] a = {{5, 9, 3, 2, 14}, {77, 44, 22, 15, 99}, {14, 2, 3, 9, 5}, {88, 15, 17, 121, 33}} ; System.out.printf("Average = %.2f\n", average(a)) ; System.out.println("EXPECTED:") ; System.out.println("Average = 29.85") ; System.out.printf("Average of evens = %.2f\n", averageEvens(a)) ; System.out.println("EXPECTED:") ; System.out.println("Average of evens = 26.57") ; Random random = new Random(1) ; a = new int[100][1] ; for (int i = 0 ; i < 100 ; i++) a[i][0] = random.nextInt(1000) ; System.out.println("For an array of random values in range 0 to 999:") ; System.out.printf("Average = %.2f\n", average(a)) ; System.out.printf("Average of evens = %.2f\n", averageEvens(a)) ; } /** Find the average of all elements of a two-dimensional array @param aa the two…